diff --git a/source/DotNetOpenAuth.WebAPI.ClientSample/packages.config b/source/DotNetOpenAuth.WebAPI.ClientSample/packages.config
index 390e180..0fc650a 100644
--- a/source/DotNetOpenAuth.WebAPI.ClientSample/packages.config
+++ b/source/DotNetOpenAuth.WebAPI.ClientSample/packages.config
@@ -21,7 +21,7 @@
   <package id="Microsoft.Net.Http" version="2.2.28" targetFramework="net451" />
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net451" />
   <package id="Modernizr" version="2.8.3" targetFramework="net451" />
-  <package id="Newtonsoft.Json" version="6.0.6" targetFramework="net451" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net451" />
   <package id="Respond" version="1.4.2" targetFramework="net451" />
   <package id="WebGrease" version="1.6.0" targetFramework="net451" />
 </packages>
\ No newline at end of file